Two door handles from the Wittgenstein House by the philosopher Wittgenstein and the architect Engelmann. Wittgenstein wanted to design a house in which everything up to the smallest detail would be perfectly logical. This led him to change the sizes of the handles depending on the proportion, material and function of the door. The upper handle for a metal door between the hall and the salon is 8mm longer than the one beneath it for a wooden door on the second floor. That's precision of design.
